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Karthikeyan A, Girard M, Dumont MJ, Chouinard G, Tavares JR. Surface Modification of Commercially Available PLA Polymer Mesh. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Adya Karthikeyan
- CREPEC, Department of Chemical Engineering, Polytechnique Montréal, Montréal, QuébecH3C 3A7, Canada
| | - Melanie Girard
- CREPEC, Department of Chemical Engineering, Polytechnique Montréal, Montréal, QuébecH3C 3A7, Canada
| | - Marie-Josee Dumont
- CREPEC, Department of Chemical Engineering, Laval University, Québec CityG1V 0A6, Canada
| | - Gerald Chouinard
- Research and Development Institute for the Agri-Environment (IRDA), Saint-Bruno-de-Montarville, QuébecJ3V 0G7, Canada
| | - Jason Robert Tavares
- CREPEC, Department of Chemical Engineering, Polytechnique Montréal, Montréal, QuébecH3C 3A7, Canada
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Little A, Pellis A, Comerford JW, Naranjo-Valles E, Hafezi N, Mascal M, Farmer TJ. Effects of Methyl Branching on the Properties and Performance of Furandioate-Adipate Copolyesters of Bio-Based Secondary Diols. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2020; 8:14471-14483. [PMID: 33014637 PMCID: PMC7525809 DOI: 10.1021/acssuschemeng.0c04513] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 08/12/2020] [Indexed: 06/11/2023]
Abstract
Furandioate-adipate copolyesters are an emerging class of bio-based biodegradable polymers with great potential to replace fossil-derived terephthalic acid-based copolyesters such as poly(butylene adipate-co-terephthalate) (PBAT). Furandioate-adipate polyesters have almost exclusively been prepared with conventional primary (1°) alcohol diols, while secondary (2°) alcohol diol monomers have largely been overlooked until now, despite preliminary observations that using methyl-branched diols increases the T g of the resultant polyesters. Little is known of what impact the use of 2° alcohol diols has on other properties such as material strength, hydrophobicity, and rate of enzymatic hydrolysis-all key parameters for performance and end-of-life. To ascertain the effects of using 2° diols on the properties of furandioate-adipate copolyesters, a series of polymers from diethyl adipate (DEA) and 2,5-furandicarboxylic acid diethyl ester (FDEE) using different 1° and 2° alcohol diols was prepared. Longer transesterification times and greater excesses of diol (diol/diester molar ratio of 2:1) were found to be necessary to achieve M ws > 20 kDa using 2° alcohol diols. All copolyesters from 2° diols were entirely amorphous and exhibited higher T gs than their linear equivalents from 1° diols. Compared to linear poly(1,4-butyleneadipate-co-1,4-butylenefurandioate), methyl-branched, poly(2,5-hexamethyleneadipate-co-2,5-hexamethylenefurandioate) (0:7:0.3 furandioate/adipate ratio) displayed both higher modulus (67.8 vs 19.1 MPa) and higher extension at break (89.7 vs 44.5 mm). All other methyl-branched copolyesters displayed lower modulus but retained higher extension at break compared with their linear analogues. Enzymatic hydrolysis studies using Humicola insolens cutinase revealed that copolyesters from 2° alcohol diols have significantly decreased rates of biodegradation than their linear equivalents synthesized using 1° alcohol diols, allowing for fine-tuning of polymer stability. Hydrophobicity, as revealed by water contact angles, was also found to generally increase through the introduction of methyl branching, demonstrating potential for these materials in coatings applications.
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Affiliation(s)
- Alastair Little
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Alessandro Pellis
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
- Department of Agrobiotechnology, Institute of Environmental Biotechnology, University of Natural Resources and Life Sciences, Vienna, Konrad-Lorenz Straβe 20, Tulln an der Donau 3430, Austria
| | - James W Comerford
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
| | - Edwin Naranjo-Valles
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Nema Hafezi
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Mark Mascal
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, California 95616, United States
| | - Thomas J Farmer
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K
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